11 25 Pistons with Rings and Pins N20/N26
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.
PISTONS WITH RINGS AND PINS SPECIFICATIONS
| 1st groove | ||
| End clearance | mm | 0.15...0.30 |
| Side clearance | mm | 0.03...0.08 |
| 2st groove | ||
| End clearance | mm | 0.30...0.50 |
| Side clearance | mm | 0.02..0.06 |
| 3rd groove | ||
| End clearance | mm | 0.20...0.90 |
| Side clearance | mm | can't be measured |
PISTONS WITH RINGS AND PINS SPECIFICATIONS
| Piston and pin are paired to each other - replace together only. | ||
| Measuring point "A" (position) | mm | 12 |
| Piston diameter at measuring point "A" | ||
| Original (new dimension) | mm | 83.95... 83.96 |
| Repair stage (new dimension) | mm | % |
| Oversize (new dimension) | mm | % |
| Piston installation clearance (piston new) | mm | 0.01...0.03 |
| Piston installation clearance (piston worn) | mm | 0.02...0.05 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | mm | 0.15 |